Well, finally got my RX300 back to the dealer and they FINALLY found what the "clicking" noise is that is coming from the frontend. They are replacing both axles!! Wow, how ironic, while in Colorado last year on vacation I had my car into a dealer for service and they told me that both axles needed replacing but it would be fine to drive back home to Texas. I took the car in immediately to get the axles replaced and since last year the dealer in Houston has been telling me the axles where fine. Well I guess it must be pretty bad now because they are replacing them. Thanks to everyone who responded to my front end "clicking" noise. Hopefully this will help someone else if they have the same problem.